Child Safety Seat Base and Headrest Dynamics for Impact Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing child safety seats with ISOFIX connections lack flexibility and do not adequately protect the child's head during impacts, as they are rigidly fixed to the vehicle seat and do not adjust to external forces effectively.
Innovation Solution
A base with a telescopically and pivotably connected anchor assembly and a holding mechanism that allows the headrest to lean forward under impact, combined with a crotch belt buckle receiving device for enhanced safety and adjustability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the ISOFIX connecting part is rigidly fixed to the vehicle seat, then the installation stability is improved, but the ability to adapt to external forces during impact is worsened
Solution Approach 1:
The anchor assembly is designed with telescopic and pivotable connections that allow dynamic movement during impact. The connection between the base bracket and anchor assembly includes sliding grooves and pivot shafts that enable the anchor assembly to move relative to the base bracket, transforming the rigid fixed connection into a dynamic adaptive system that can respond to external forces while maintaining installation stability
2Strength
If the headrest is rigidly fixed to the backrest, then the structural strength is improved, but the ability to protect the child's neck during impact is worsened
Solution Approach 1:
The holding mechanism uses a pivot shaft connected to the backrest plate through pivot holes, allowing the headrest to rotate and lean forward dynamically during impact. This dynamic movement maintains the headrest's structural strength while enabling it to follow the child's neck movement, reducing the risk of neck injury by preventing rigid resistance
Solution Approach 2:
The holding mechanism is pre-configured with a limiting rod and limiting chute that constrain the headrest's movement range. During normal use, the headrest is held in position, but during impact, the mechanism is pre-designed to allow controlled forward movement, preventing excessive rotation while enabling protective movement to maintain consistent distance with the child's neck
3Ease of manufacture
If the anchor assembly is fixed in position, then the manufacturing simplicity is improved, but the adjustment flexibility is worsened
Solution Approach 1:
The anchor assembly incorporates sliding grooves and pivot shafts that enable telescopic and rotational movements. The base bracket forms sliding grooves that guide the pivot shaft movement, allowing the anchor assembly to adjust its position and angle while maintaining a relatively simple overall structure that can be manufactured using standard processes
Data Source
AI summary
The present disclosure discloses a base, a holding mechanism, a crotch belt buckle receiving device and a child safety seat. The base is used for a child safety seat, and includes: a housing forming an appearance of the base; a base bracket accommodated in the housing; and an anchor assembly telescopically and pivotably connected to the base bracket and at least partially extending out of the housing. The holding mechanism enables a headrest to lean forward when being impacted by an external force. The crotch belt buckle receiving device is arranged in a seat portion of a seat body of the child safety seat. The child safety seat includes a seat body and a headrest. The base and the child safety seat provided by the present disclosure have good safety and convenient operation.